An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90…
Priority MEDIUM 58CWE-667Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-667 and the CVSS impact.
Summary
An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00321 25th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:illumos:illumos:*:*:*:*:*:*:*:* | before 2022-01-18 | Vulnerable | illumos |
| cpe:2.3:o:omniosce:omnios:r151038:*:*:*:community:*:*:* | r151038 | Vulnerable | Omniosce |
| cpe:2.3:o:openindiana:openindiana:hipster_2021.04:*:*:*:*:*:*:* | hipster_2021.04 | Vulnerable | Openindiana |
| cpe:2.3:o:joyent:smartos:20210923:*:*:*:*:*:*:* | 20210923 | Vulnerable | Joyent |
| cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:* | 10 | Vulnerable | Oracle |
| cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:* | 11 | Vulnerable | Oracle |
- cpe:2.3:o:illumos:illumos:*:*:*:*:*:*:*:* Versions before 2022-01-18 Vulnerable ·illumos
- cpe:2.3:o:omniosce:omnios:r151038:*:*:*:community:*:*:* Versions r151038 Vulnerable ·Omniosce
- cpe:2.3:o:openindiana:openindiana:hipster_2021.04:*:*:*:*:*:*:* Versions hipster_2021.04 Vulnerable ·Openindiana
- cpe:2.3:o:joyent:smartos:20210923:*:*:*:*:*:*:* Versions 20210923 Vulnerable ·Joyent
- cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Oracle
- cpe:2.3:o:oracle:solaris:11:*:*:*:*:*:*:* Versions 11 Vulnerable ·Oracle
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-43395
- 2026-10-03 Alias added: GHSA-6w9w-8g4v-j4m6
References
Exploit 2
Patch 3
Sources
- CVE-2021-43395 · CVE Program
- CVE-2021-43395 · NVD
- FIRST EPSS
- GHSA-6w9w-8g4v-j4m6 · GitHub Advisory Database · CC BY 4.0
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